Thank you for your bug report. Do you get any error if you start it from a command line? Could you add your 'journalctl -b 0' log after getting the issue?
** Changed in: software-properties (Ubuntu) Status: New => Incomplete -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1870601 Title: Software & Updates window stops responding after I click "prereleased updates" To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/software-properties/+bug/1870601/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs